/* Flex Level Drop Down Menu v1.1
* Created: Jan 5th, 2010 by DynamicDrive.com. This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/

//Version 1.1 (Feb 19th, 2010): Each flex menu (UL) can now be associated with a link dynamically, and/or defined using JavaScript instead of as markup.

//Usage: $(elementselector).addflexmenu('menuid', options)
//ie:
//jQuery(document).ready(function($){
  //$('a.mylinks').addflexmenu('flexmenu1') //apply flex menu with ID "flexmenu1" to links with class="mylinks"
//})

jQuery.noConflict()

var flexdropdownmenu={
  arrowpath: 'images/arrow.gif', //full URL or path to arrow image
  animspeed: 200, //reveal animation speed (in milliseconds)
  showhidedelay: [150, 150], //delay before menu appears and disappears when mouse rolls over it, in milliseconds

  //***** NO NEED TO EDIT BEYOND HERE
  startzindex:1000,
  builtflexmenuids: [], //ids of flex menus already built (to prevent repeated building of same flex menu)

  positionul:function($, $ul, e, $anchor){
    var istoplevel=$ul.hasClass('jqflexmenu') //Bool indicating whether $ul is top level flex menu DIV
    var docrightedge=$(document).scrollLeft()+$(window).width()-40 //40 is to account for shadows in FF
    var docbottomedge=$(document).scrollTop()+$(window).height()-40
    if (istoplevel){ //if main flex menu DIV
      var offsets=$anchor.offset()
      var anchorsetting=$anchor.data('setting')
      var x=offsets.left+anchorsetting.useroffsets[0]+(anchorsetting.dir=="h"? $anchor.outerWidth() : 0) //x pos of main flex menu UL
      var y=offsets.top+anchorsetting.useroffsets[1]+(anchorsetting.dir=="h"? 0 : $anchor.outerHeight())
      x=(x+$ul.data('dimensions').w > docrightedge)? x-(anchorsetting.useroffsets[0]*2)-$ul.data('dimensions').w+$anchor.outerWidth()+(anchorsetting.dir=="h"? -($anchor.outerWidth()*2) : 0) : x //if not enough horizontal room to the ridge of the cursor
      y=(y+$ul.data('dimensions').h > docbottomedge)? y-(anchorsetting.useroffsets[1]*2)-$ul.data('dimensions').h-$anchor.outerHeight()+(anchorsetting.dir=="h"? ($anchor.outerHeight()*2) : 0) : y
    }
    else{ //if sub level flex menu UL
      var $parentli=$ul.data('$parentliref')
      var parentlioffset=$parentli.offset()
      var x=$ul.data('dimensions').parentliw //x pos of sub UL
      var y=0
      x=(parentlioffset.left+x+$ul.data('dimensions').w > docrightedge)? x-$ul.data('dimensions').parentliw-$ul.data('dimensions').w : x //if not enough horizontal room to the ridge parent LI
      y=(parentlioffset.top+$ul.data('dimensions').h > docbottomedge)? y-$ul.data('dimensions').h+$ul.data('dimensions').parentlih : y
    }
    $ul.css({left:x, top:y})
  },
  
  showbox:function($, $flexmenu, e){
    clearTimeout($flexmenu.data('timers').hidetimer)
    $flexmenu.data('timers').showtimer=setTimeout(function(){$flexmenu.show(flexdropdownmenu.animspeed)}, this.showhidedelay[0])
  },

  hidebox:function($, $flexmenu){
    clearTimeout($flexmenu.data('timers').showtimer)
    $flexmenu.data('timers').hidetimer=setTimeout(function(){$flexmenu.hide(100)}, this.showhidedelay[1]) //hide flex menu plus all of its sub ULs
  },


  buildflexmenu:function($, $menu, $target){
    $menu.css({display:'block', visibility:'hidden', zIndex:this.startzindex}).addClass('jqflexmenu').appendTo(document.body)
    $menu.bind('mouseenter', function(){
      clearTimeout($menu.data('timers').hidetimer)
    })    
    $menu.bind('mouseleave', function(){ //hide menu when mouse moves out of it
      flexdropdownmenu.hidebox($, $menu)
    })
    $menu.data('dimensions', {w:$menu.outerWidth(), h:$menu.outerHeight()}) //remember main menu's dimensions
    $menu.data('timers', {})
    var $lis=$menu.find("ul").parent() //find all LIs within menu with a sub UL
    $lis.each(function(i){
      var $li=$(this).css({zIndex: 1000+i})
      var $subul=$li.find('ul:eq(0)').css({display:'block'}) //set sub UL to "block" so we can get dimensions
      $subul.data('dimensions', {w:$subul.outerWidth(), h:$subul.outerHeight(), parentliw:this.offsetWidth, parentlih:this.offsetHeight})
      $subul.data('$parentliref', $li) //cache parent LI of each sub UL
      $subul.data('timers', {})
      $li.data('$subulref', $subul) //cache sub UL of each parent LI
      $li.children("a:eq(0)").append( //add arrow images
        '<img src="'+flexdropdownmenu.arrowpath+'" class="rightarrowclass" style="border:0;" />'
      )
      $li.bind('mouseenter', function(e){ //show sub UL when mouse moves over parent LI
        var $targetul=$(this).css('zIndex', ++flexdropdownmenu.startzindex).addClass("selected").data('$subulref')
        if ($targetul.queue().length<=1){ //if 1 or less queued animations
          clearTimeout($targetul.data('timers').hidetimer)
          $targetul.data('timers').showtimer=setTimeout(function(){
            flexdropdownmenu.positionul($, $targetul, e)
            $targetul.show(flexdropdownmenu.animspeed)
          }, flexdropdownmenu.showhidedelay[0])
        }
      })
      $li.bind('mouseleave', function(e){ //hide sub UL when mouse moves out of parent LI
        var $targetul=$(this).data('$subulref')
        clearTimeout($targetul.data('timers').showtimer)
        $targetul.data('timers').hidetimer=setTimeout(function(){$targetul.hide(100).data('$parentliref').removeClass('selected')}, flexdropdownmenu.showhidedelay[1])
      })
    })
    $menu.find('ul').andSelf().css({display:'none', visibility:'visible'}) //collapse all ULs again
    this.builtflexmenuids.push($menu.get(0).id) //remember id of flex menu that was just built
  },

  

  init:function($, $target, $flexmenu){
    if (this.builtflexmenuids.length==0){ //only bind click event to document once
      $(document).bind("click", function(e){
        if (e.button==0){ //hide all flex menus (and their sub ULs) when left mouse button is clicked
          $('.jqflexmenu').find('ul').andSelf().hide()
        }
      })
    }
    if (jQuery.inArray($flexmenu.get(0).id, this.builtflexmenuids)==-1) //if this flex menu hasn't been built yet
      this.buildflexmenu($, $flexmenu, $target)
    if ($target.parents().filter('ul.jqflexmenu').length>0) //if $target matches an element within the flex menu markup, don't bind onflexmenu to that element
      return
    var useroffsets=$target.attr('data-offsets')? $target.attr('data-offsets').split(',') : [0,0] //get additional user offsets of menu
    useroffsets=[parseInt(useroffsets[0]), parseInt(useroffsets[1])]
    $target.data('setting', {dir: $target.attr('data-dir'), useroffsets: useroffsets}) //store direction (drop right or down) of menu plus user offsets
    $target.bind("mouseenter", function(e){
      $flexmenu.css('zIndex', ++flexdropdownmenu.startzindex)
      flexdropdownmenu.positionul($, $flexmenu, e, $target)
      flexdropdownmenu.showbox($, $flexmenu, e)
    })
    $target.bind("mouseleave", function(e){
      flexdropdownmenu.hidebox($, $flexmenu)
    })
  }
}

jQuery.fn.addflexmenu=function(flexmenuid, options){
  var $=jQuery
  return this.each(function(){ //return jQuery obj
    var $target=$(this)
    if (typeof options=="object"){ //if options parameter defined
      if (options.dir)
        $target.attr('data-dir', options.dir) //set/overwrite data-dir attr with defined value
      if (options.offsets)
        $target.attr('data-offsets', options.offsets) //set/overwrite data-offsets attr with defined value
    }
    if ($('#'+flexmenuid).length==1) //check flex menu is defined
      flexdropdownmenu.init($, $target, $('#'+flexmenuid))
  })
};

//By default, add flex menu to anchor links with attribute "data-flexmenu"
jQuery(document).ready(function($){
  var $anchors=$('*[data-flexmenu]')
  $anchors.each(function(){
    $(this).addflexmenu(this.getAttribute('data-flexmenu'))
  })
})


//ddlistmenu: Function to define a UL list menu dynamically

function ddlistmenu(id, className){
  var menu=document.createElement('ul')
  if (id)
    menu.id=id
  if (className)
    menu.className=className
  this.menu=menu
}

ddlistmenu.prototype={
  addItem:function(url, text, target){
    var li=document.createElement('li')
    li.innerHTML='<a href="'+url+'" target="'+target+'">'+text+'</a>'
    this.menu.appendChild(li)
    this.li=li
    return this
  },
  addSubMenu:function(){
    var s=new ddlistmenu(null, null)
    this.li.appendChild(s.menu)
    return s

  }
}